diff --git a/cmds/idmap/create.cpp b/cmds/idmap/create.cpp
index 41395f13ce5f4..9d60ee1c0e508 100644
--- a/cmds/idmap/create.cpp
+++ b/cmds/idmap/create.cpp
@@ -41,7 +41,7 @@ namespace {
             ALOGD("error: fchmod %s: %s\n", path, strerror(errno));
             goto fail;
         }
-        if (TEMP_FAILURE_RETRY(flock(fd, LOCK_EX | LOCK_NB)) != 0) {
+        if (TEMP_FAILURE_RETRY(flock(fd, LOCK_EX)) != 0) {
             ALOGD("error: flock %s: %s\n", path, strerror(errno));
             goto fail;
         }